c# - 如何转换 IQueryable> 到 IQueryable与 Linq

Question

var page = pagesRepository.GetPages();
var categoryPages = page.ChildCategoryPages;
var articlePages = categoryPages.Select(x => x.ChildPages);

articlePages是IQueryable<IQueryable<Page>>。但我需要IQueryable<Page>.

这该怎么做？

Answer 1

var articlePages = categoryPages.SelectMany(x => x.ChildPages);